USMC KA-BAR, educate me

[finloq]

Just won it.
"USMC" "KA-BAR"
Thin pommel, pinned.
USN sheath.
Probably late WWII?

http://www.ebay.com/itm/371110929858?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

 

[gunsil]

It's WW2 alright, and before the switch to guard marking. USN sheath is a replacement, original was leather.